Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701687 | Thrust producing sole and heel structure with interior and exterior fluid filled pockets | Karl M. Schmidt, Harry W. Edwards | 1997-12-30 |
| 5678328 | Heel and sole structure with opposite cavities | Karl M. Schmidt, Harry W. Edwards, George S. Cole | 1997-10-21 |
| 5679439 | Heel/metatarsal structure having tapered stabilizing bulges | Karl M. Schmidt, George S. Cole | 1997-10-21 |
| 5664341 | Sole and heel structure with premolded bulges and expansible cavities | Karl M. Schmidt, Harry W. Edwards | 1997-09-09 |